Stock fork oil on MT-09, what SAE number?

[haki242]

Hi, do you know somone what SAE number fork oil is original(stock) in MT-09 forks?

I have made 2 right cartridges modification with Hyperpro progresive springs and put in 10W Motul fork oil factory line with 145mm oil level and i think it is too heavy?

So do you know what is the number of stock fork oil and what recommendation of fork oil is for 2 right cartridges modification?

Thanks for answers

 

[Kinjane]

http://www.peterverdone.com/wiki/index.php?title=Suspension_Fluid

Stock fork oil is Yamaha 01 fork oil with a viscosity rating of 15.6cSt.

Unless you're trying to control some seriously heavy springs I'd guess that an oil rated at around 20cSt would work well enough with twice the damping capability.

 

[motorcycleboy]

Standard fork oil might be SAE 5w... according many riders who have put stiffer front springs you could use 5w for road and 7,5w for track. Thicker oil "works" only with standard springs (75kg/cm)..
Some members walked the same route as you (2 right cartridges) but there aren't so many feedback on comments etc. so it's interesting to post your thoughts after some km..

 

[chump]

Factory Line 10w is 36 cSt. A bit heavy.